title: Wetting behaviour of silicone- and resin-based root canal sealers.
abstract: OBJECTIVE
  To evaluate the wetting behaviour of three different classes of endodontic sealers, silicone (Roekoseal Automix)-, epoxy-resin (2Seal, AH Plus)- and methacrylate-based sealers (EndoRez, RealSeal, RealSeal SE, Seal 3D) on dentine specimens with and without chemical pre-treatment.
  
  
  METHODS
  Eighty caries-free molar teeth were used for the preparation of 160 dentine discs. Half of the discs were rinsed with distilled water, and the remainder were treated with 3% NaOCl, followed by 17% EDTA and 2% CHX to simulate the final rinse under clinical-like conditions. For both irrigation methods, 10 droplets of each sealer were analysed. Data were statistically analysed using multivariate anova (general linear model, α = 0.05) that assessed the effects of material, irrigation procedure and time on the measured contact angle as well as their interaction.
  
  
  RESULTS
  Contact angle was primarily influenced by the material (P < 0.05), followed by time (P < 0.05). Irrigation procedure had a significant influence (P < 0.05) on contact angle formation of all materials except EndoRez and AH Plus. EndoRez had the highest values, and Roekoseal Automix had the lowest values for all measurements. RealSeal SE had lower values after chemical treatment.
  
  
  CONCLUSIONS
  The silicone-based sealer Roekoseal Automix had better wettability than epoxy-resin- or methacrylate-based sealers. The irrigation regime significantly favoured the wettability of 2Seal and RealSeal SE.
authors.affiliation: Department of Restorative Dentistry, Dental School Ludwig-Maximilians-University, Munich, Germany.
authors.forename: S
authors.initials: S
authors.lastname: Bohn
authors.forename: N
authors.initials: N
authors.lastname: Ilie
mesh_terms: D003731:Dental Caries / Q000628:therapy; D004708:Endodontics; D006801:Humans; D012387:Root Canal Filling Materials; D012828:Silicones; D017155:Wettability
chemical_list: D012387:Root Canal Filling Materials; D012828:Silicones
keywords: contact angle; dentine; irrigation methods; root canal sealer; wettability